A peculiar new fossil shrew (Lipotyphla, Soricidae) from the High Arctic of Canada
Arctisorex polaris, gen.n., sp.n., from the late Neogene of Ellesmere Island, Nunavut, is the most northerly record thus far of a shrew. The genus is represented by the posterior moiety of a dentary and last two molars. The well-developed M 3 and the extreme distance between the articular condyles,...
Published in: | Canadian Journal of Earth Sciences |
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Language: | English |
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Canadian Science Publishing
2002
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Online Access: | http://dx.doi.org/10.1139/e01-078 http://www.nrcresearchpress.com/doi/pdf/10.1139/e01-078 |
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crcansciencepubl:10.1139/e01-078 2023-12-17T10:25:47+01:00 A peculiar new fossil shrew (Lipotyphla, Soricidae) from the High Arctic of Canada Hutchison, J Howard Harington, C R 2002 http://dx.doi.org/10.1139/e01-078 http://www.nrcresearchpress.com/doi/pdf/10.1139/e01-078 en eng Canadian Science Publishing http://www.nrcresearchpress.com/page/about/CorporateTextAndDataMining Canadian Journal of Earth Sciences volume 39, issue 4, page 439-443 ISSN 0008-4077 1480-3313 General Earth and Planetary Sciences journal-article 2002 crcansciencepubl https://doi.org/10.1139/e01-078 2023-11-19T13:38:57Z Arctisorex polaris, gen.n., sp.n., from the late Neogene of Ellesmere Island, Nunavut, is the most northerly record thus far of a shrew. The genus is represented by the posterior moiety of a dentary and last two molars. The well-developed M 3 and the extreme distance between the articular condyles, separated by a narrow interarticular isthmus, agrees best with the neomyine shrews. The expansion and anterior inclination of the coronoid process, extreme elongation of the third molar that results in it being longer than the M 2 , and the M 3 with a distinct entoconid valley, are unique among soricids. We suggest that Arctisorex may be the only shrew specialized for frugivory. Article in Journal/Newspaper Arctic Ellesmere Island Nunavut Polaris Canadian Science Publishing (via Crossref) Arctic Nunavut Ellesmere Island Canada Canadian Journal of Earth Sciences 39 4 439 443 |
institution |
Open Polar |
collection |
Canadian Science Publishing (via Crossref) |
op_collection_id |
crcansciencepubl |
language |
English |
topic |
General Earth and Planetary Sciences |
spellingShingle |
General Earth and Planetary Sciences Hutchison, J Howard Harington, C R A peculiar new fossil shrew (Lipotyphla, Soricidae) from the High Arctic of Canada |
topic_facet |
General Earth and Planetary Sciences |
description |
Arctisorex polaris, gen.n., sp.n., from the late Neogene of Ellesmere Island, Nunavut, is the most northerly record thus far of a shrew. The genus is represented by the posterior moiety of a dentary and last two molars. The well-developed M 3 and the extreme distance between the articular condyles, separated by a narrow interarticular isthmus, agrees best with the neomyine shrews. The expansion and anterior inclination of the coronoid process, extreme elongation of the third molar that results in it being longer than the M 2 , and the M 3 with a distinct entoconid valley, are unique among soricids. We suggest that Arctisorex may be the only shrew specialized for frugivory. |
format |
Article in Journal/Newspaper |
author |
Hutchison, J Howard Harington, C R |
author_facet |
Hutchison, J Howard Harington, C R |
author_sort |
Hutchison, J Howard |
title |
A peculiar new fossil shrew (Lipotyphla, Soricidae) from the High Arctic of Canada |
title_short |
A peculiar new fossil shrew (Lipotyphla, Soricidae) from the High Arctic of Canada |
title_full |
A peculiar new fossil shrew (Lipotyphla, Soricidae) from the High Arctic of Canada |
title_fullStr |
A peculiar new fossil shrew (Lipotyphla, Soricidae) from the High Arctic of Canada |
title_full_unstemmed |
A peculiar new fossil shrew (Lipotyphla, Soricidae) from the High Arctic of Canada |
title_sort |
peculiar new fossil shrew (lipotyphla, soricidae) from the high arctic of canada |
publisher |
Canadian Science Publishing |
publishDate |
2002 |
url |
http://dx.doi.org/10.1139/e01-078 http://www.nrcresearchpress.com/doi/pdf/10.1139/e01-078 |
geographic |
Arctic Nunavut Ellesmere Island Canada |
geographic_facet |
Arctic Nunavut Ellesmere Island Canada |
genre |
Arctic Ellesmere Island Nunavut Polaris |
genre_facet |
Arctic Ellesmere Island Nunavut Polaris |
op_source |
Canadian Journal of Earth Sciences volume 39, issue 4, page 439-443 ISSN 0008-4077 1480-3313 |
op_rights |
http://www.nrcresearchpress.com/page/about/CorporateTextAndDataMining |
op_doi |
https://doi.org/10.1139/e01-078 |
container_title |
Canadian Journal of Earth Sciences |
container_volume |
39 |
container_issue |
4 |
container_start_page |
439 |
op_container_end_page |
443 |
_version_ |
1785577450696081408 |